<?php

function subtract( $minuend, $subtrahend){
	return $minuend - $subtrahend;
};

function notify_sum( $list ){
	return true;
}

function sum( $a, $b, $c ){
	return $a + $b + $c;
}

function notify_hello( $int ){
	return true;
}

function get_data(){
	return array("hello", 5);
}